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R&S ZNB Series User Manual

R&S ZNB Series
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GUI reference
R&S
®
ZNB/ZNBT
346User Manual 1173.9163.02 ─ 62
The effect of the basic arithmetic operators (/, *, , +) and the mathematical
functions is described in Table 5-2.
Products of numbers and constants may be entered in abbreviated form, e.g.
2e for 2*e.
The Clear, Del, Back buttons are used to correct faulty entries.
Check performs a consistency check of the displayed mathematical expression
and displays a message.
"Operands" contains all data traces and memory traces of the active recall set.
Data and memory traces are identified by their trace names.
"Data" denotes the active data trace.
"Mem" is the memory trace associated with the active data trace (or the first
created one, if several memory traces are associated with the active data
trace).
"StimVal" is the array of stimulus values; see footnote for Table 5-2.
The trace operands denote unmodified data and memory traces. Trace math and
other trace functions ("Smoothing", "Hold", "Shift Trace" etc.) are not taken into
account.
Table 5-2: Effect of the operators on a complex quantity z = x + jy.
+, -, *, / Basic arithmetic operations
() Grouping parts of an expression
Lin Mag
|z| = sqrt ( x
2
+ y
2
)
dB Mag dB Mag(z) = 20 * log|z| dB
round x real round(x) rounds x to the closest integer (away from zero for
ties)
x,y real round(x+yj) = round(x)+round(y)j
x
y
Exponential, e.g. z
2
Arg Phase φ (z) = arctan ( Im(z) / Re(z) )
Re, Im x, y (Real and Imag)
log, ln Common (base 10) or natural (base e) logarithm
Min, Max Smaller or larger values of all points of two traces, e.g.
Min(Trc1,Trc2)
StimVal *) Stimulus value*)
tan, atan, sin, asin, cos, acos Direct and inverse trigonometric functions.
*) The operand "StimVal" can be used for all sweep types. Please note that – as with
all user math operands – only the numerical value without unit is processed in the user
math formula.
In frequency sweeps "StimVal" provides the stimulus frequency in Hz.
In power sweeps, "StimVal" provides the voltage in V that results from the source
power in dBm. To obtain the correct source power in dBm (for "dB Mag" trace for-
mat), Result is Wave Quantity must be enabled. Note that, due to the conversion
into a dBm value, the source power depends on the reference impedance of the
port associated with the measured wave quantity, to be set in the "Balanced Ports"
dialog.
Trace Config softtool

Table of Contents

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R&S ZNB Series Specifications

General IconGeneral
BrandR&S
ModelZNB Series
CategoryMeasuring Instruments
LanguageEnglish

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